The Stone of Fire (Geronimo Stilton Cavemice #1)

This NEW Geronimo Stilton series spin-off is set in the Stone Age! Geronimo Stiltonoot, Geronimo Stilton's ancient ancestor, runs the stone newspaper in Old Mouse City. When the Stone of Fire, the most precious artifact in the mouseum, is stolen, Geronimo Stiltonoot and his cavemouse friend Hercule Poirat set out to retrieve it from Tiger Khan and his band of fearsome felines.